Road traffic predication system and method based on OD (Origin Destination) updating

Abstract

The invention discloses a road traffic predication system based on OD (Origin Destination) updating. The predication system is composed of five subsystems, namely a data management subsystem, an image management subsystem, an OD updating subsystem, a requirement predication subsystem and a road traffic predication subsystem, wherein the data management subsystem, the image management subsystem and the OD updating subsystem are used for maintaining and analyzing road traffic basic data, and the requirement predication subsystem and the road traffic predication subsystem face to actual decision making and application of road planning implementation management. The invention further discloses a road traffic predication method based on OD updating, and the method comprises the following steps of: on the basis of the last time of road OD investigation, obtaining an OD matrix of the current year road according to an OD updating method; and taking the OD matrix as a basis to realize the traffic predication of a regional road network, so as to analyze the traffic operation condition of the road network. According to the road traffic predication system and method disclosed by the invention, the problem that the common road OD matrix in a road network plan cannot be synchronized with the planning year is solved and decision-making evidences are supplied to road new construction and a reconstruction project for a road supervising and decision-making department, so as to improve the decision-making rapidness, scientific property and rationality of a road network project.

Description

technical field [0001] The invention relates to a road traffic prediction technology based on OD update, belonging to the field of road network traffic planning systems. Background technique [0002] "OD survey" is "traffic start-stop survey", also known as "OD traffic volume survey", "OD traffic volume" refers to the traffic volume between the start and end points. "O" comes from the English "ORIGIN", indicating the starting point of the trip, and "D" comes from the English "DESTINATION", indicating the destination of the trip. OD survey results are usually expressed in a two-dimensional table, called OD table, also called OD matrix. OD survey results have been applied in road network planning, feasibility study, design, traffic organization and management of new or reconstructed projects. A large number of OD survey data, the prediction of long-term traffic volume, the determination of road types and grades, the setting of interchanges, the design of road cross-sections,...

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Problems solved by technology

[0005] At present, there are quite a lot of theoretical research results in this field, but very few technologies have been put into practical engineering. Some foreign professional institutions have developed corresponding traffic planning software for this. The effect of domestic application is not very satisfactory; there are few achievements in the design and development of road traffic planning software in China, and there are very few softwares that can solve the problem of OD update and road traffic forecasting at the same time, which also makes it difficult to apply some advanced road planning technologies to Engineering practice

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